This article is about the unit of data. Therefore, one megabyte reduce pdf file to 500kb one million bytes of information.

However, in the computer and information technology fields, several other definitions are used that arose for historical reasons of convenience. 2 but lacked a convenient name. 6 file manager is a notable example of this usage in software. 1 GB is one billion bytes. Semiconductor memory doubles in size for each address lane added to an integrated circuit package, which favors counts that are powers of two. The capacity of a disk drive is the product of the sector size, number of sectors per track, number of tracks per side, and the number of disk platters in the drive. Changes in any of these factors would not usually double the size.

It was a natural extension to give the capacity of a disk drive in multiples of the sector size, giving a mix of decimal and binary multiples when expressing total disk capacity. DNA representing 800 MB of data. The parts that differentiate one person from another can be compressed to 4 MB. Human genomes as email attachments”. This page was last edited on 14 November 2017, at 14:17. Flavanols from the Camellia sinensis var. Glucosidase and lipase inhibitors play important roles in the treatment of hyperglycaemia and dyslipidemia.

To identify novel naturally occurring inhibitors, a bioactivity-guided phytochemical research was performed on the pu-erh tea. Their structures were determined by spectroscopic and chemical methods. Peer review under responsibility of Institute of Materia Medica, Chinese Academy of Medical Sciences and Chinese Pharmaceutical Association. These authors make equal contributions to this work. 2016 Chinese Pharmaceutical Association and Institute of Materia Medica, Chinese Academy of Medical Sciences. Production and hosting by Elsevier B. File proveniente da Wikimedia Commons.